Map update over Wifi - continually disrupted by standby

Hi, 

After lastweeks firmware update to 28.20 I have now tried to uodate on my 1040 the map from 21.20 to 25.10.

It was very painful since no matter what the dice went back to standby if it was not touched every once in a while. 

Is there a simple way to disable any standby for the time of the map download and installation? 

Thanks for any useful info!